mabtindale



(No Model.)

B. B. MARTINDALE.

PULLEY.

- l Patented Oct. 81, 1882,

I JV VEJV' TOR.

PER

Nrrnn Starts Parent FPULLEY.

SPECIFICATION forming part of Letters Patent No. 266,709, dated October31, 1882.

Application filed August 28, 1882. (No model.)

To all whom it may concern:

Be it known that I, ELIJ AH B. MARTINDALE, of the city of Indianapolis,county of Marion,

4 and State of Indiana, have invented certain new and usefulImprovements in Wheels o'r Pulleys, of which the following is aspecification.

The object of my said invention is to produce a strong and durable wheelor pulley from sheets of paper or pasteboard; and it consists of a webor central portion consisting of disks of paper or pasteboard laidtogether, extending from the hub to the periphery of the wheel, and arim consisting of rings of a similar substance laid around the outeredge of said web, with a ring of iron upon each outer surface, the wholebeing pressed into a compact mass, and secured firmly together by meansof an adhesive substance being spread over the several sheets or layersbefore they are placed together, and bolts or rivets passing through thecompleted structure, all as will be herein alter more specificallydescribed.

I am aware of the construction shown in combined iron and paperear-wheels, in which layers of paper form the internal portion of thebody of the wheel, and I therefore disclaim such a construction.

Referring to the accompanying drawings, which are made a part hereof,and on which similar letters of reference indicate similar parts, Figure1 is ,a side elevation of my improved wheel; Fig. 2, a front elevationthereof; Fig. 3, a central vertical section on the dotted line 00 w inFig. 1, and Fig. 4 a perspective view of the hub.

In saiddrawings, the portions marked A represent the shaft on which thewheel is mounted; B, the hub to said wheel; 0, the web or centralportion of said wheel; D, the rim thereto; E, the iron rings by whichthe rim is strengthened; and F, bolts or rivets for securing said ringsto said rim, and also strengthening said rim and the pulley generally.

The hub B is preferably formed as shown in Fig. 4. The central portionon which the web 0 is mounted is square, octagon, or similar form, toprevent said web from turning thereon. The center may be continued inthe same form far enough to receive the removable flanges B, or the formmay be changed, as shown in the drawings; but in any event the formshould be such as will effectually prevent said flanges from turning onsaid hub. The

| ends of the hub are preferably formed round, for the sake ofappearance. When the hub is constructed as shown in the drawings ashoulder is formed, against which the flanges B rest. Said flanges aresecured to the wheel by the bolts 1), as shown.

The web 0 is formed of numerous sheetsof paper or pasteboard, coatedwith some adhesive substance and laid together, and said sheets alsoextend through to. the periphery of the wheel, thus forming a part ofits operating surface or face.

The rim Dis composed of rings of sufficient width to givethe requiredstrength, which are secured to the sides of the central portion, G,enough being used to give the pulley the required width of face.

The iron rings E are preferably nearly as large as the outer of therings which compose the rim, and are secured to said rim by the belts orrivets F. They are made of somewhat less diameter than the wheel, asshown, so that the belt(or', if atriction-pulley, the other wheel) shallnot come upon the iron, but only on a paper surface.

The belts or rivets F are used to secure the rings E to the rim of thewheel, and to aid in holding the several layers of which the rim iscomposed together, thereby strengthening the entire wheel.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is-- 1. The combination of the hub13, web 0, rim D, said rim and said web being composed of layers ofpaper or pasteboard, arranged as specified, metal rings E, and belts orrivets F, all substantially as set forth.

2. The combination, in a pulley, of the hub B, the central portion ofwhich is shouldered and of a form to hold the pulley from turningthereon, and flanges B B,whichcome against the shoulders on said hub,and are secured to said wheel by bolts b, thus also holding said pulleyfixedly on said hub, substantially as shown and specified.

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 26th day of August, A. D. 1882.

ELIJAII B. MARTINDALE. ['t.

In presence of (l. BRADFORD, E. W. BRADFORD.

